Iris-based 2-bit waveguide phase shifters and transmit-array for automotive radar applications

Vorobyov, A.; Fourn, Erwan; Sauleau, Ronan; Baghchehsaraei, Zargham; Oberhammer, J.; Chicherin, Dmitry; Räisänen, Antti V.

doi:10.1109/eucap.2012.6206079

Cited by 7 publications

(4 citation statements)

References 10 publications

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“…Such functional networks are suitable for electronic antennae steering, and are of particular interest for radar applications, as reported in Van Caekenberghe (2009) Reinke et al . (2011), Vorobyov et al . (2011), and in De Angelis et al .…”

Section: Impedance Matching Tunersmentioning

confidence: 95%

RF MEMS passive components for wireless applications

Iannacci

2013

Handbook of Mems for Wireless and Mobile Applications

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Section: Impedance Matching Tunersmentioning

confidence: 95%

RF MEMS passive components for wireless applications

Iannacci

2013

Handbook of Mems for Wireless and Mobile Applications

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“…To reduce 1-bit reconfigurable transmitarray phase quantization insertion loss, several designs were investigated for a 2-bit or 3-bit fixed beam (passive) transmitarray [117][118][119]. A multi-bit phase quantization transmitarray significantly improves execution for collimating characteristics over a 1-bit structure.…”

Section: Multi-bit Structuresmentioning

confidence: 99%

Recent Developments and Challenges on Beam Steering Characteristics of Reconfigurable Transmitarray Antennas

et al. 2022

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This paper highlights recent developments and challenges on beam steering characteristics of reconfigurable transmitarray antennas. It introduces the operating principle of beam forming/beam steering high gain transmitarray antennas to enable the user to opt for economical and high performance solutions. A transmitarray antenna typically consists of a source antenna and a phase transformation structure. The incident waves generated from the source antenna is tilted using the phase transformation structure in a desired direction to steer the beam. Moreover, the phase transformation structure alters the incident wavefront to a plane wavefront using phase change characteristics. In order to steer a beam to a specific desired angle, it can be divided into two methods. There is a method of applying a transmitarray with a variable transmission phase change or a method of changing the shape of the wavefront of the source antenna. This type of beam forming/beam steering high gain antenna has been mainly studied from the point of view of high efficiency, low profile, and low cost. Several solutions of transmitarray unit cells have been presented in the literature, using PIN diodes, varactors, MEMS switches, and microfluids enable electronics to realize reconfigurable characteristics of transmitarray antennas. This paper analyzes the characteristics of various beam steering high gain reconfigurable transmitarrays (RTA) and highlights the future opportunities and challenges of the structure design for transmitarray antennas. This paper also highlights the challenges and gaps in terahertz and optical frequencies related to future work due to the structure complexity and lack of components’ availability. Moreover, the challenges and limitations related to multi-bit structures and dual-band requirements are presented.

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“…The TA works in a similar way as a traditional phased array, its major advantage is that no feeding network is necessary, since the cells are excited through free space propagation leading to a high radiation efficiency. TA research has greatly advanced in recent years, allowing this type of antenna to find applications in several fields, such as automotive [2], High Throughput Satellites (HTS) [3], Satellite on the move (SOTM) [4] and many other wireless high data rate communications. Usually unit-cells are developed in a receiver-transmitter configuration [5] [6], or using frequency selective surfaces (FSS) [4] [7] [8].…”

Section: Introductionmentioning

confidence: 99%

Linearly Polarized Transmit-array Operating in mmWave Bands, Design, Optimization and Demonstration

Cabral

Pages-Mounic

Barka

et al. 2022

2022 16th European Conference on Antennas and Propagation (EuCAP)

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This paper presents the design and optimization of a transmit-array (TA) operating at 10 GHz. This TA is based on a new unit-cell that allows to generate an easy phase rotation required for TA design, while keeping insertion losses to a minimum. The proposed unit-cell is a simple three metallic layer structure, in which two identical square patches are interconnected through an inner via. The optimized structure has a low profile with a total thickness of only 3.2 mm (0.1λ0), the simple design allows standard and low cost PCB printing. The unitcell is designed with CST Microwave Studio and measured with a waveguide measurement system for S-parameters validation. The results show a working bandwidth of 900 MHz (9% relative bandwidth) and insertion losses of 0.3 dB at 10 GHz, full wave simulations show an unit-cell gain of 4.8 dBi making it a very suitable choice for TA design. To demonstrate its performance, a 1-bit transmit-array with 20×20 cells is proposed, simulated and manufactured showing a high gain of 21.01 dBi and low side lobe levels (-20.93 dB). Finally, to reduce the overall profile of the TA, a multiple feed TA is conceived using an particle swarm optimization (PSO) algorithm to define the phase compensation distribution and allows a reduction of 50% of the focal length.

show abstract

Iris-based 2-bit waveguide phase shifters and transmit-array for automotive radar applications

Cited by 7 publications

References 10 publications

RF MEMS passive components for wireless applications

RF MEMS passive components for wireless applications

Recent Developments and Challenges on Beam Steering Characteristics of Reconfigurable Transmitarray Antennas

Linearly Polarized Transmit-array Operating in mmWave Bands, Design, Optimization and Demonstration

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